Thickening and/or thinning upward patter
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CHARLES W. HARPER
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Article
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1998
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John Wiley and Sons
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English
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Geologists commonly purport that successions of strata show one or more thickening and/or thinning upward trends, often prompting colleagues to argue that the `trends' are subjectively identified, unproven or nonexistent. Parametric and randomization tests are proposed to evaluate the null hypothesi